[Contextual Search] Add support for crushed sprites and animate the search provider icon

ui/android/resources/crushed_sprite_resource.cc

+// Copyright 2015 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+#include "ui/android/resources/crushed_sprite_resource.h"
+
+#include "cc/resources/scoped_ui_resource.h"
+#include "cc/trees/layer_tree_host.h"
+#include "ui/gfx/android/java_bitmap.h"
+
+namespace ui {
+
+CrushedSpriteResource::CrushedSpriteResource(
+    const SkBitmap& bitmap,
+    const SrcDstRects& src_dst_rects,
+    gfx::Size sprite_size)
+    : bitmap_(bitmap), src_dst_rects_(src_dst_rects),
+      sprite_size_(sprite_size) {
+}
+
+CrushedSpriteResource::~CrushedSpriteResource() {
+}
+
+void CrushedSpriteResource::SetBitmap(const SkBitmap& bitmap) {
+  bitmap_ = bitmap;

[David Trainor- moved to gerrit, 2015/10/27 21:00:43]

Can probably just leave it immutable at this point :).

[Theresa, 2015/10/28 02:01:53]

Done.

+}
+
+const SkBitmap& CrushedSpriteResource::GetBitmap() {
+  DCHECK(!bitmap_.empty());
+  return bitmap_;
+}
+
+bool CrushedSpriteResource::BitmapHasBeenEvictedFromMemory() {
+  return bitmap_.empty();
+}
+
+CrushedSpriteResource::FrameSrcDstRects
+CrushedSpriteResource::GetRectanglesForFrame(int frame) {
+  DCHECK(frame >= 0 && frame < static_cast<int>(src_dst_rects_.size()));
+  return src_dst_rects_[frame];
+}
+
+gfx::Size CrushedSpriteResource::GetSpriteSize() {
+  return sprite_size_;
+}
+
+int CrushedSpriteResource::GetFrameCount() {
+  return src_dst_rects_.size();
+}
+
+}  // namespace ui